Finding the Fourth Proportional to 7,125,467.20, 10,688,200.80 and 6,403,854.40
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Solution
The fourth proportional to 7,125,467.20, 10,688,200.80 and 6,403,854.40 is: 9,605,781.60
Step by Step Solution
- Step 1: Write the proportion equation
7,125,467.20 : 10,688,200.80 = 6,403,854.40 : x - Step 2: Convert to fraction form
7,125,467.20/10,688,200.80 = 6,403,854.40/x - Step 3: Cross multiply
7,125,467.20x = 10,688,200.80 × 6,403,854.40 - Step 4: Simplify right side
7,125,467.20x = 68,445,681,721,163.53 - Step 5: Solve for x
x = 68,445,681,721,163.53/7,125,467.20 - Step 6: Final answer
x = 9,605,781.60
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.